| 摘要 |
<p>FLUID CURRENT METER Two pairs of acoustic transducers are provided for obtaining fluid current velocity measurements. The pairs of transducers are mounted in a supporting ring which introduces a controlled source of error in the measurement process, the configuration however resulting in a nearly constant error regardless of flow direction. The constant error introduced by the ring supporting structure may be easily corrected by a sealing factor in the signal processing circuitry utilized to compute fluid velocity.</p> |
